On Mon, Mar 18, 2019 at 7:39 PM Jorge Diez - CX6VM <[email protected]> wrote:
> what are the diferent ways to turn KPA1500´s on/off remotely? > > Is there any way to turn it on/off alone, with no need to turn on/off the > K3? > Yes. There are at least three methods to power the KPA1500 ON/OF independently without using the REM jack on the back of KPA1500, assuming you leave the rocker switch on the back of the separate KPA1500 power supply in the ON position: 1. Connect the KPA1500 to a PC via USB cable. Use the KPA1500 Utility (running on a local PC) to power the amp. on and off. The KPA1500 Remote Software <https://elecraft.com/pages/kpa1500-kpa500-kat500-remote-software> also has this capability. -or- 2. Momentarily ground Pin 8 of the KPA1500 AUX connector. This is easily accomplished using an S-BOX <https://bit.ly/S-BOX> or S-BOX-USB and a simple program to pulse the DTR or RTS pin of a real or virtual serial port, or you can build an equivalent circuit using a resistor and NPN transistor (same technique that is used by RemoteHams software to power up a K3 remotely with no RemoteRig box required). A KPAK3AUX cable cannot be used (no connection on Pin 8). 3. Use a Y-BOX v2.1 <https://bit.ly/Y-BOX> which can connect DIGOUT 1 (Pin 11) to the amplifier PIn 8, and a K3 Macro, as described in detail here <https://www.kkn.net/~n6tv/Y-BOX/Features.html#Remote>. For example i want to turn on K3, but want to have KPA1500 off, is there > any way to do that? > Yes. See above. 73, Bob, N6TV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
